USO Crowd Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, stands among service members listening to country music during the USO Holiday Tour at Taji Military Complex, Iraq, Dec. 25, 2017. DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro SHARE IMAGE: Download Image: Full Size (0.66 MB) Tags: Travels , USO Tour 2017, Iraq, Central Command, Centcom, Chairman, Joint Chiefs, Joe Dunford Photo By: Dominique A. Pineiro VIRIN: 171225-D-PB383-024.JPG Photo Gallery